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Method for hydrogenation of cracked carbon nine fraction

A technology for cracking carbon and fractions, which is applied in the fields of hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc. It can solve the problems of small processing capacity, poor product quality, fluctuation of process technical parameters, etc., and achieve the improvement of oil quality and good technology effect of effect

Active Publication Date: 2019-05-24
SINOPEC SHANGHAI ENG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem of small processing capacity, fluctuation of process technology parameters and poor product quality in the prior art, and a new method for hydrogenation of cracked carbon nine fractions is provided

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  • Method for hydrogenation of cracked carbon nine fraction
  • Method for hydrogenation of cracked carbon nine fraction
  • Method for hydrogenation of cracked carbon nine fraction

Examples

Experimental program
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Effect test

Embodiment 1

[0023] A method for hydrogenation of cracked carbon nine fractions, such as figure 1 Shown, at first, cracking carbon nine fraction raw material (7) and hydrogen raw material (6) are sent into adiabatic bed hydrogenation reactor (1) and carry out hydrogenation reaction; Then, the reaction product of hydrogenation enters gas-liquid separator (2 ), the separated gaseous material goes to the hydrogen compressor (3) pressurized and returns to recycle unreacted hydrogen; finally, the separated liquid phase material goes to the light removal tower (4), and the light removal tower top is separated The light component (8) is discharged, and the liquid phase material in the de-lightening column continues to enter the de-weighting tower (5), and the hydrogenated carbon nine product (9) is separated from the top of the de-weighting tower, and the heavy component is separated from the de-weighting tower. (10), the heavy component (10) is a hydrocarbon compound with a distillation range ≥ ...

Embodiment 2

[0029] According to the conditions and steps described in Example 1, only the production scale of the ethylene plant is changed to 1 million tons / year, and naphtha NAP is used as the cracking raw material, and the by-product cracked carbon nine fraction of the ethylene plant is about 161,000 tons / year.

[0030]Using the method for hydrogenation of the cracked C9 fraction of the present invention: first, the raw material of the cracked C9 fraction and the hydrogen raw material are sent to the adiabatic bed hydrogenation reactor for hydrogenation reaction; then, the hydrogenated reaction product enters the gas-liquid separator, and is separated The gaseous material is decompressed by the hydrogen compressor and returned to recover unreacted hydrogen and recycled; finally, the separated liquid material is sent to the light removal tower, and the light component is separated from the top of the light removal tower, and the light removal tower The liquid phase material in the kettle...

Embodiment 3

[0035] According to the conditions and steps described in Example 1, only the production scale of the ethylene unit is changed to 1.5 million tons / year, hydrogenated tail oil HVGO is used as the cracking raw material, and the by-product cracked carbon nine fraction of the ethylene unit is about 329,000 tons / year .

[0036] Adopt the method for hydrogenation of cracked carbon nine cuts of the present invention, technological operation parameter is as follows: the reaction gauge pressure of isothermal fixed-bed hydrogenation reactor 2.3MPa, reaction temperature 87 ℃, liquid space velocity 4.8h －1 , hydrogen / oil volume ratio 520:1; catalyst composition: the main active component is nickel Ni, the content is 36%, the auxiliary active component is titanium Ti, the content is 1.4%, the carrier is alumina Al 2 o 3 , the specific surface area is 310m 2 / g, the specific pore volume is 0.9ml / g. The inlet gauge pressure of the hydrogen compressor is 2.1MPa, the outlet gauge pressure i...

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Abstract

The invention relates to a method for hydrogenation of cracking C_9 distillate, which mainly solves the problems of low capacity of treating the cracking C_9, fluctuating of technology technical parameters, and lower product quality in the prior art. The method for hydrogenation of cracking C_9 distillate comprises the following steps of sending ethylene device byproducts of a cracking C_9 distillate raw material (7) and a hydrogen raw material (6) into a hydrogenation reactor (1) to perform hydrogenation reaction; sending a hydrogenation reaction product into a gas and liquid separator (2), pressurizing the separated gas-phase material by a hydrogen compressor (3), returning back into an inlet pipeline of the hydrogen raw material (6), sending the separated liquid-phase material into a low boiling fraction removal column (4), separating a low boiling fraction (8) from the top part of the low boiling fraction removal column, continuing to send the liquid phase material of a reactor of the low boiling fraction removal column into a high boiling fraction removal column (5), separating a hydrogenated C_9 product (9) from the top part of the high boiling fraction removal column, and separating a high boiling fraction (10) from a reactor of the high boiling fraction removal column. By adopting the technical scheme, the method has the advantages that the problem is solved, and the method can be used for hydrogenating the cracking C_9 distillate.

Description

technical field [0001] The invention relates to a method for hydrogenation of cracked carbon nine fractions. Background technique [0002] my country's cracking raw materials mainly include gaseous hydrocarbons, naphtha NAP, atmospheric diesel oil AGO, hydrogenated tail oil HVGO, etc. No matter what kind of cracking raw materials are used to produce ethylene, a certain amount of C9 and C9 fractions will be produced by-product. C9 fraction is the remaining fraction after pyrolysis gasoline is separated from C5 fraction and C6-C8 fraction by rectification in the process of cracking ethylene, accounting for about 10% to 20% of the total ethylene production. Cracking carbon nine is a high-quality raw material for producing aromatic solvent oil. However, because cracked carbon nine contains a large amount of olefins and a certain amount of sulfur, nitrogen and other impurities, it has a strong odor and poor stability. Therefore, at present, all ethylene production plants directl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02
CPCC10G67/02C10G2300/1037
Inventor 吴德荣何琨白玫李真泽张斌
Owner SINOPEC SHANGHAI ENG
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